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Wastewater management in small- and medium-size enterprises: case studies

Author

Listed:
  • Sohair I. Abou-Elela

    (National Research Centre)

  • Fayza A. Nasr

    (National Research Centre)

  • Saber A. El-Shafai

    (National Research Centre)

Abstract

Wastewater management in small and medium-sized enterprises representing the chemical and food industries was investigated. The results showed that wastewater discharged from an ink-production factory was highly contaminated with organic pollutants. Anaerobic biological treatment followed by chemical coagulation using ferric chloride aided with lime proved to be very effective and produced an effluent that complied with national regulatory standard for wastewater discharge into public sewage network. Also, management of wastewater from a confectionery factory representing the food sector was carried out. Aerobic biological treatment using plastic-packed trickling filter proved to be an effective treatment method. However, application of in-plant control measures alleviated the requirement for the construction of a wastewater treatment plant. The applied pollution prevention and cleaner production measures involved good housekeeping, recovery of spent chocolate, modification of floor cleaning and installation of suction devices for the removal of sugar and starch powders. All improvement measures were documented by cost/benefit analysis.

Suggested Citation

  • Sohair I. Abou-Elela & Fayza A. Nasr & Saber A. El-Shafai, 2008. "Wastewater management in small- and medium-size enterprises: case studies," Environment Systems and Decisions, Springer, vol. 28(3), pages 289-296, September.
    • Handle: RePEc:spr:envsyd:v:28:y:2008:i:3:d:10.1007_s10669-007-9142-4
    DOI: 10.1007/s10669-007-9142-4
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